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PROCESS AND APPARATUS FOR COLLECTING
AN~7 STAPLING FOLDED 1'RTN'TED SHEETS
BACKGROUND O>; H~' E IP~1_ TIO
The present invention ralates to a pracess
and an apparatus for collecting and stapling .~o~.ded
printed sheets a~ the 'type having a plurality of
supports which travel along a closed path o~
conveyance, on which supports pr~.~nted sheets can be
deposited astride one another and a stapling station
for placing staples onto the printed sheets on the
supports.
such an apparatus is known, for example, ~rom
DE-OS 3,616,566, or ~rom th.a corrdsponding U.S. Patent
No. 4,'35,406. This disclosed apparatus alas a coll~c-
tor drum witk~ saddle-shaped supports that axe ax:~anged
paz~allel to a common axis o~ rotation and are driuen to
rotate about this axis. Fro~rideci in the direc~apx>; of
the axis of rotation are two feeders which follow one
another and deposit folded printed sheets onto the
supports. A stapl:~ng rotation (allows the feeders ~ox
stapling together the mutually overlying printed
sheets. Immediately a~tex stapling, the oo~.~.ected and
stapled prixated sheets are deposited onto a canveyo~c
bait which transports the stapled printed sheets away.
The stapling statiora has ~ plurality of staplixrg head
pairs, which are arranged at the spaoing o~ the
supports, which extend parallel to one another, oz°i a
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bail that is swivelably mounted on the axis of rotation
o~ the drum. The bail as moved to and from by means o~
a swivel drive with the stapling heads simultaneously ~~
placing one staple each ~.wto the printed sheets during
the synchronous operation with the supports.
As to tJhe construction of the stapling heads.
these above-referez~eed printed publications refer to CFA
Patent Spoci~ication 549,443 or U.~, Patent
No. 4,014,290. These known stapling heads are each fed
a wire from which a wixe section 5~s severed in each
case by means o~ a cutting device arranged on the
stapling head, This wire sectioza is bent around a
matrix by means of a slidably mounted stamp to ~orm a
rataple. The staple is Forced out of the stamp by means
of a slidably mounted ram and inserted into the printed
sheets. This mown apparatus has the disadvantage that
thn stapling statS.on must have a Complicated drive
which must apply ~.arg~: accelerating Forces, especially
in the case of a high pxoGessing rate. 1'4oreover,
during each opex~at3.onal cycle of the stapling station,
the movement of the stapling heads must be exactly
synchronized with the supports. Since a wire has to be
Fed to each stap2s.ng head, an the casr~ o~ mova.rig
stapling heads this sy.nahran~.zation zs carnplicated both
for the feeding of the wire and for the staplfi,ng heads
themselves.
A stapling station fox' stapling togethex
printed sheets caxried by a rotating cylinder is
described ix~ EP-A 4, 205,144. and corxespanding tT. S.
Patent No. 4,750,661. Three stapling heads are
arranged next to ox~e anothe~x i.ln each case a~G the free
ends o~ a cruc~,~orm l~oldirag device. The holding device
is driven to rotate opposite to the direction of rota-
tion of the cylinder about a shaft paxallel to thp axis
of the cylinder. The three stapling heads run past
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three wire section dispensers common to all corresponding
stapling heads. The circular track of travel of the stapling
heads is tangent to the surface of the cylinder. The rotary
motion of the holding device is synchronized with the cylinder
in such a way that the printed sheets to be stapled to one
another always meet the stapling heads. In this known
stapling station, only an exceptionally short time is
available in each case for placing the staples. This renders
reliable, good quality stapling difficult in the case of high
processing rates.
Furthermore, an apparatus for collecting folded
printed sheets is known from CH Patent Specification 645,074
and corresponding U. S. Patent No. 4,408,755. This apparatus
likewise has a drum with supports extending parallel to a
common axis of rotation. The folded printed sheets are
deposited one above the other, mutually associated to form
zigzag volumes, on the supports. By-means of a stapling
station (not described in more detail), staples are placed in
the volumes which are laid one above the other and supported
by the supports.
Therefore, it is desired to create a process accord-
ing to the generic type described above for collecting folded
printed sheets, and to provide a corresponding stapling
apparatus in which the stapling station has a high processing
capacity yet has simply constructed stapling heads and a
relatively uncomplicated drive.
SUMMARY OF THE INVENTION
The invention provides an apparatus for collecting
folded printed sheets, comprising: a plurality of spaced
saddled-shaped supports including means for arranging the
plurality of supports to rotate along a closed path of
conveyance; the supports, in at least one section of the path
of conveyance, having a mutually parallel longitudinal extent
extending substantially perpendicular to the direction of
rotation; at least two feed stations arranged spatially from
one another for depositing printed sheets astride one another
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on the supports; a stapling station disposed at at least one
section of the path of conveyance and the downstream of the
feed stations, the stapling station having a plurality of
stapling heads arranged in a row one behind another essentially
at the spacing of the supports for placing staples, in a
staple region, into the printed sheets deposited on the
supports; the stapling heads essentially moving in a plane
extending transverse with the supports means for forming
staples from essentially straight wire sections held by the
stapling heads; a wire section dispenser; a lead-away means
for conveying the stapled printed sheets away from the stapl-
ing station; wherein the stapling station has one single
extensive staple placing region extending along said section
of the path of conveyance and the stapling heads travel along
a closed track pf travel, the track of travel leading past the
wire section dispenser and along said section of the path of
conveyance, the stapling heads traveling at a rate or velocity
essentially equal to the rate or velocity of the supports, and
moving together synchronously with the supports along said
section of the path of conveyance of the supports.
Since the stapling heads are essentially arranged
behind one another with a spacing corresponding to the spacing
of the supports and rotate along a closed track of travel 'at
essentially the same rate as the supports, large accelerating
forces are avoided for the rotation of the stapling heads in
the stapling station.
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This arranc_ternent in conjunction with the
direction of rotation of the stapling heads, which
always remains the same, enables a simple drive. The
closed track o~ travel of the stapling heads leads past
a common w~r~ aeo~clor~ d~apencar .nor -tne E~aplin~ he acts.
An individual wire section dispenser thus supplies all
stapling heads of a stapling head arrangement. This
keeps the apparatuses which provide the wire sections
extremely modest. Moreover this arrangemaz~t enables a
simple construction of the stapling heads, since the
stapling heads themselves lao lazzger need to have a>«y
cuttizzg device,
the spaci.z~g between the stapling heads along
the track of travel is large enough that, during glac-
ing of the staples, the distance between the staples
corresponds in each case to the spacing of the sup-
ports. Thus, depending upon the course of txavel of '
the track, during placing of the staples, the mutual
spacing of the stapling heads can be slightly dif~erexat
in relation to the spaci><ag of the supports.
zn a particularly preferred embodiment, the
apparatus according to the invention has an extremely
simple drive fox the stapling heads. In this embodi-
ment, supports of a collector drum rotate about a
common axis of rotation and extend essentially in the
horizontal direction. A holding arrangement embraces
the collector drum and is constructed ila an annular
shape. The holding arrangement is pivvtaliy mounted on
a frame and ane stapling head per supp~rt is arranged
az> the holding arrangement.
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BRIEF' DESCRIP ' p~! U~H~ DR.AwzN~s
The invention will now be explained in more
detail with reference to the drawing, wherein in
strictly diagrammatic form:
figura 1 ehowo a pre~erx~d B'EItbPC~.LtTI~?Ilt: OT the
invention which includes a collector drum having a sta-
pling station a~ wnzct~ tree s~apamg heaa:~ ~v4uu~ a~..-..xz~
a track of travel guided around the collector drum.
E'lgu3'es ~ alic3 3 Show tla~ arauw colioa~ax drum
a~ ~n Fig. a, bu'C W~.th Zh~ staplinc3 l~Y:ad~; z:otat3~ng
along a kidney-shaped or circular track of travel.
Figure 4 shows a callsctor device with an
elongated rotation track for the supports, and a
likewise elongated track of travel for the stapling
heads.
figure 5 shows a further embodi>«ent of the
invention according to Fag. ~..
figure 6 shows an enlarged representation of
a sectian along the line VI-VI of Fig. 5.
figures 7 and 8 show a stapling head in
elevation and top view, respectavely.
Figure 9 shows a section along the ~.ine IBC-IX
of Fig. 8.
Figures 10 axed 15 show a simpla.fied repres-
entation of the stapling head at d~.ffersnt phases of an
operational cycle.
figures 16 and 17 shaw a wixe section dis-
penser in elevation and end views respectively.
Figures 18 to 24 show an enlarged representa-
tion of parts of the appamatus accoxding to F~,g. S at
various phases o~f a rotata.on.
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DETAINED DESCRIPTTON OF. THE PRESENThY
PREFERRED'EMBODIMENTS
Figure 1 shows a collector drum 10 such as is
described in detail in EP-A- 0 341 425 or the corresponding
CA Patent Application No. 599,201-0. This collector drum 10
has saddle-shaped supports 14 which are arranged around a
common axis of rotation 12, extend in the direction of the
axis of rotation 12, and are driven in the direction of
rotation U. A carriage 16 is arranged such that it can be
moved back and forth in the direction of the axis of rotation
12. The carriage 16 is provided in the region between two
neighboring supports 14 in each case with a controllable
clamping arrangement 18 for the folded printed sheets 20
which are deposited astride the supports 14.
A stapling station 22 has a stapling head arrange-
ment 24 with stapling heads 28 which are arranged essentially
behind one another along a track of travel 26 which extends
coaxially around the collector drum 10. Each support 14 is
assigned a stapling head 28 and, therefore, the stapling
heads 28 are essentially arranged with the same mutual spacing
A as the supports 14.
Provided outside the track of travel 26 is a wire
section dispenser, designated by 30, past which the track of
travel 26 leads. This wire section dispenser 30 has a
cutting device 32 by means of which wire sections 38 are
severed from a wire 36 drawn from a supply roll 34. Down-
stream of the cutting device 32 is a magazine 40 that is fed
by the cutting device 32 with wire sections 38. A conveyor
wheel 42 includes holding elements 44 distributed along the
circumference of the conveyor wheel 44. The conveyor wheel
42, driven in the direction of rotation V, draws a wire
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25561-65
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section 38 from the magazine 40 in each case by means of its
holding elements 44 and conveys the wire section 38 to the
stapling heads 28.
The apparatus represented in Fig. 1 operates as
follows. Seen in the direction of conveyance of the carriage
16, feed stations for printed sheets are located in a known way
upstream of the stapling station 22. In each case, these feed
stations deposit a folded printed sheet 20 astride each support
14, which runs past the feed station in the direction of
rotation U. In each case, before a support 14 enters the lower
region of its circular track of travel, the relevant clamping
arrangement 18 is clamped in place in order to retain the parts
of the printed sheets 20 reaching into the appropriate carriage
16. As the carriages 16 pass through the lower half of the
track of travel of the supports 14, they execute a working
stroke in the longitudinal direction of the axis of rotation 12
to the nearest feed station or to the stapling station 22.
Upon leaving the lower half of the track of travel of the
supports 14, the relevant clamping arrangement 18 is once again
released, so that the printed sheets 20 in the upper region of
the rotation track of the supports 14 experience no movement in
the direction of the axis of rotation 12. In this region of
the track of travel, the carriages 16 execute a return stroke
with the opened clamping arrangement 18.
The stapling heads 28 are likewise driven
synchronously with the supports 14 in the direction of rotation
U. When a stapling head 28 runs past the conveyor wheel 42,
the stapling head 28 accepts a wire section 38 from the
conveyor wheel 42. In a region that is designated by B and,
seen in the direction of rotation U, follows the wire section
dispenser 30, the wire section 38 now held by the stapling head
28 is
05i24i1990 11: 38 FRQh1 ~J I LL I t~~l ~ BR I NKS r OLDS TO J161323284Q0 F, 01
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formed into a staple, as is described in detail below.
In a subseeguent region o~ the track of travel 25 that
is designated by C, the staple is brought from the
outer side of the stapling heads 28, seen i.n the radial
diz~ectxon, to the inner side facing the supports l~. A
region D of the track of travel 26 of the stapling
heads 28 is located in the upper half of the rotatiorx
track of the supports 14 in which the praa~ted sheets 20
execute no movement in the direction of the axis ox
rotation 12. In this region D, the relevant stapling
heads 28 axe lowered onto the printed sheets 20 which
are deposited one above the other on the supports 1~
and the staples are inserted into the printed sheets.
In this process, tk~e spacing A of the wtapling heads 28
corresponds to the spacing o~ the support I,~. After
the staples are placed, the stapling heads 28 are
raised once again, whereupon the collected and stapled
printed sheets 2d axe now fed, in the course of the
next rotation of the collector drum 10 in the direction
o~ the axes or rvtat~vn lZ, tv a lead-away r~~.a4lvF',
Tho collootor drum 10 ehown in figures 2 and
3 carxesponds to that of Figure Z, and will therefore
not be described ~:n more detail. According to fi.g. 2,
the track o~ travel 26 fox the stapling heads 28 is
constructed in the form of a kidney and runs in a
region D along the rotatzon track of the supports l~ of
the collector drum 10. The collector drum 10 is
arranged outside the track of travel 26. The wire
section dispenser 30, which is indicated only diagram-
matically, is arranged inside said.track. the
collector drum lU rotates in the counterclockwise
direction Lt, and the stapling heads 28 axe draven in
the opposite direction u' at the same rate as that of
the supports 14. During pl~c~.r~g o~ the staples, the
spacing A of the stapling heads 28 correspoz~ds in tuna
g _
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to the spacing of the supports 14, so that in each case a
corresponding stapling head 28 runs along with each support
in the region D for placing the staples.
The embodiment shown in Figure 3 corresponds
essentially to that of Figure 2. The only difference consists
in that the track of travel 26 is constructed in the form of
a circle, and the region D is consequently essentially
shortened to a point D'. This means that the particular
stapling head 28 comes to bear only very briefly for placing
the staple into the printed sheets 20 deposited onto the
supports 14. Here, too, the stapling heads 28 are arranged
along their track of travel 26 at a spacing A that corresponds,
during placing of the staples, to the spacing of the supports
14 of the collector drum 10.
The embodiment of the apparatus represented in
Figure 4 for collecting folded printed sheets 20 has a
collector conveyor 46 such as is described in the EP-A-
0 346 578 or in the corresponding CA Patent Application No.
602,289-8 or with a similar construction in EP Patent
Specification 0,095,603 or corresponding U. S. Patent No.
4,489,930. The collector conveyor 46 has a tension element 50,
which is led around two mutually spaced deflecting wheels.
The wheels are merely indicated in the drawing with their axes
of rotation 48 which extend essentially horizontally. The
tension element supports 14 are arranged on the tension
element 50 at specific spacings behind one another and
extending parallel to one another and perpendicular to the
direction of rotation U. The stapling station 22 has a
stapling head arrangement 24, arranged above the collector
conveyor 46. The stapling station 22 includes an elongated
track of travel 26 for the stapling heads 28. The stapling
heads 28 are arranged on a tension member (not
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riveted) at the same spacings A as the supports 194 in
the region D. The tension member is driven in the
direction U' at the same rate as the tension element SO
in the direction U. Consequently, the stapling heads
28 extend synchronously with the supports 14, and each
move past the wire section dispenser 30 remote from the
region D. Feed stations for laying folded printed
sheets 20 onto the supports 19r are located in a known
manner upstream, seen in the direction of the arrow U,
of the stapling station 22 along the upper side of the
collector conveyor 46. Of course, a lead-away station
for the stapled printed sheets 20 is located downstream
of the stapling station 22.
The stapling stations 22 represented in
figures 2 to 4 function as follows. On each occasion,
each stapling head 28 accepts a w~.re section from the
wire section dispenser 30 as it runs past it. Tn the
course of the rotational movement in the direction of
the arrow U' along the track of travel 26, a staple is
bent from the wire sertion in the region between the
wire section dispenser 30 and the region D, D' (staple
placing region), the staple is brought onto the side of
the stapling heads 28 that is located outside in
relative to the track of travel 26. ~n the region D,
b', the staplin~l heads 28 come to bear on the relevant
supports 14 or an the printed sheets 20 deposited
thereupon, and place the staple into the printed
sheets 20.
Tn embodiments according to Figs. 2 arid 4, it
is also conceivable to arrange ~Ghe wire section
dispenser outside the track o~ travel 2C~. O.f Course.
in this case the wire section or~the staple remains on
the side a~ the stapling head 'Gloat is located outside
relative to the track of travel.
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An embodiment o~ the invention according to
FigurQ Z is now described below i.z~ more detail. The
stapling station 22 shown in Figures 5 and 6 has two
stapling head arrangements 24 arranged on the same
holding arrangemezat S2. The holding arrangement 52 is
constructed with an annular shape az~d coaxially
embraces the collector drum 10, which is driven about
the axis of rotation 12 in the direction o~ rotation U.
xhe holding arrangement 52 has two holding rings 54,
which are mutually spaced in the direction of the axis
of rotation 12 and are connected to one another in the
manner of a cage via transposed bars 56. Each of the
holding rings S4 is mounted freely pivotally on three
bearing rollers 60 which are arranged on a frame 5~3.
In each case the rollers 60 are mutually spaced
approximately equidistant.
Each suppozt 14 is assigned a stapling head'
2$ from each stapling head arrangement 24, which are
fastened mutually spaced f.n the direction of the axis
of rotation 12 to a common support section 62 (Figure
6). A C-shaped bearing part 6~ is fastened to the
support section 62 at both ends. ~'he C-shaped bearing
paxt 6~ is guided slidably in the radial direction 'E
with its free end regions 64' o><x a bearing shaft G6 in
each case. The bearing shaft 6G is arranged on a
holding part 68, which is likewise C-shaped and
fastened to the particular holding rang 54. The end
region 64' o~ the bearing part 64 that is shown above
in Figure 6 is embraced by the holding part 68. A
compression spring 'l~ is disposed. around the bearing
shaft 66, and is supported, seen in the direction E,
inside on the holding part 68 and outside on the
bearing part 64. Consequently, the compressxor~ springs
'70 hold the stapling heads 28 i>~ a rest position that
is not shown in Figure 6. In this rest position, the
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stapling heads 28 are raised from the supports z4 and
the bearing parts 64 stand on the holding part 6B.
~kze bearing .parts 64 each have an arm 72,
which projects outward in the radial directiarz aver the
relevant holding part 68 and on which a follower roller
74 is mounted freely pivotally in each case. A pair of
lowering slotted links 76 acting upon these follower
rollexs ?4 is fastened above the collector drum lfl by
the frame 5$.
Furthermore, in the region of the pair of
lowerxzag slotted links 76 a ram slotted link 78
assigned to each stapling head arrangement 24 is
fastened to the frame 58. Tn each case, the ram
slotted links 78 act an rams 80 of the fatapling heads
28 in a region iza which the staplizag heads 28 are
located izx their contact position shown in k'i~gure b.
A carrier 82 is slidably mounted in each case
in the radial direction on the holding parts 68 wkiich
are fastened to a holding ring 5~. ,At its end facing
the support 14, the carrier 82 has an essentially V-
shaped carrier section 84, and at its opposite er~d a
follower roller 86 mounted freely p~.votally. A furtlaer
compression spring, 88 embraces the caxz-i.er 82, and is
supported, seen in the radial direction, at its inner
end on the holding part 6g, and at its outer end on a
ring 90 which is fastened to the car'riex 82. A Carrier
control slotted link 92 is arranged on the frame 5~3 and
acts upon the follower xollers 86 appro~cimately above
the upper half of the track of travel 25 of the
stapling heads 28. By means of this carrier control
slotted link 92, the particular carrier section 89~ can
be lowered from a rest position (not represented a.n
~°a.guxe G), in which the carrier sectian 8~ stands an
the holding paz-t 68, against the force of 'the further
compression spring 88 into a dra.ving position repres-
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anted in Figure 6, in which, the V-shaped carrier sec
Lion 84 embxaces 'the saddle-shaped suppoxt I,4.
Following the end o~ tae pair of lowering
slotted links 76 seen in the directioia of xotation U, a
releasing slotted link 96 (indicated in figure 6 by
dots and dashes), which acts upon the clamp Lever 94 of
the stapling heads 28, is arranged on tk~e frame 58.
Furthermore, following the wire section dispenser 30
indicated by an arrow, a matrix 98 shaped lake a
slatted link, which acts upon the wire section 58, and
a swivel slotted link I02 acting upon az~ actuating
shaft 100 0~ the stapling heads 28 are axraz~ged on the
frame 5$ (see Fig. 5).
The sugpart 14 is represented paxtkally Cut
away in Figure 6. Located mutually overlying an the
support I4 are printed sheets 20, Represented in cut
away is the case wherein the pxi.nted sheets 20 are
located beneath the stapling hr~ads 28 shawa.x~g the
staples 104 inserted in the sheets 20.
In the interiox of the support 14, a coupler
106 is swivelably mounted on two pivoted levers 108 in
the form of a parallel crank drive. The Levez°s 108
extend parallel to one another and era swivelably
mounted an the suppoxt L4. The pivoted levex 108,
repxesented on the left ix~ figtixe 6, is coupled to a
control level 1L0, which can be moved to and from an
the Longitudinal direction of the support 14 by means
of a contxoL arrangement (not xepresented). This up
and down movement of the contxol Lever L10 leads to a
to and from movement o~ the coupler 106 in the radial
directian E. In the xegion of the staplxxig heads 28,
slots 1l2 are provided in the coupler 1n6 which act in
the direction o~ the arrow E upon a bend-over ram 1~.4,
indicated only diagrammatically.
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G_15!24i199~J 1:41 FROIv1 L~,IILLIFa~I~ HRIhI!<S,OLDS TCJ 9161~2~~2~4~4~ F.
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For the purpose o~ a better understanding o~
the mode o~ operation of the apparatus shown in figures
and 6, the first step is now to describe the stapling
heads 28 in more detail below with reference to figures
? to 9. Mounted freely pivotally. on the lateral sides
116 of a supporting part 118, which is essentially U-
shaped, is a shaft 120. 'fhe shaft 120 has a swivel
axis 122, which is indicated by dots and dashes,
extending parallel to the longitudinal direction of the
support section 62 (cf. ~'xg. 6) and thus parallel to
the axis of rotation 12 of the collector drum 10. Two
mutually apaced bushes 124, are seated on the shaft 7.20
in the region between the two lateral, sides 116 and are
rotationally firmly connected to the shaft 120 by means
of pins 126. Stamp arms 128 0~ a stamp 130, which
extend parallel to one another, are fastened to the two
mutually spaced bushes 124. The two stamp arms 128 are
connected to one another by means of a lateral web 132.
In the freo end region, the two stamp arms 128 have a
slight swelling 134 directed against one another, in
which there axe provided grooves 7.36 which are open
with respect to one another and e~ctend in the rad~.a1
direction. ~.'hese grooves 136 are also open in the
radial directiof< at the free end of the stamp 7.30. ~,t
its free end, next to the groove 136, each stamp arm
1,28 has a drive nose 138, projecting in the radial
direction, and a permanent magnet 19:0 arranged in the
stamp arm 128. Shown in Figures 7 and 8 is a wire
sec~Cion 38 that is grasped by the drive noses 138 Grad
held by the permaJn~ent magnets 140, xhe stamp 13~ i,s
shown in ~.ts rest positaon in k'xgures ? and 8, and ire
the staple placing position 130' an Fig. 9.
On each bush. 124, a spacer bush 143 is seated
in the region of the pin 7.26, and a pivoted 7.~:ver 7.44
is mounted free7.y pivotally between the spacer bush 142
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and t;he xelevant stamp arm 128. A staple ho~.ding
element 146, which is essentially constructed in the
foam of an annular segment and connects the two pivoted
levers 144 to one anotk~er, is arranged at the free end
regions o~ tk~e pivoted levers 244. 1~ormed unto the
staple holding element 146 are two mutual7.y spaced
grooves 148, in which the ~ree end regions of the stamp
arms 128 engage upon swiveling of the stamp 130. A
lea~ spring arrangement 150 is fastened to the sup_
porting part 118. The lea~ spring arrangement 1S0 acts
with a farce which is directed countexoloGkw~,se upon
one pivoted lever 144 and pxesses the pivoted lever 149:
together with the stops 7.52 integrally Formed on them
against the supporting part 118. The staple holding
element 246 has a staple guide nose 154 projecting
counterclockwise ovex the pivoted lever 144. This
staple wade nose 154 is constructed in the form of a
wedge, and has a wedge face demoted by 154' wk~iGh is
directed inward when seen ~.ra the radial direction.
The ram 80 is slidably guided in the direc-
tion of the arrow F on the supporting part 118. This
sliding direction x extends parallel to the grooves 13C~
in the stamp arms 128 when the stamp 130 is located in
the staple placing position 130', At its lower end
xegion, the ram 80 has a ram head 158, which engages
between the two stamp aims x2$ when the stamp 1.30 is
located in the staple placing position 130'.
integrally Formed oz~ the ram head 7.58 are laterally
projecting guide wedges 160. Where the ram 80 is sled
in the direction E' from its rest position shown in
Figure 7, the projecting guide wedges 160 run ~.nto the
ejection pos~.tion shown in Figure 9, and when the? stamp
130 is located in the staple placing position 7,3C7', the
projecting guide wedges 160 enter the grooves 7.36. At
its l,owex er~d, the ram head 158 has a ram groove 162
- 16 --
~5~~~~I~lqyO 16:43 FF01°1 WILLIRN~FRI~II<S~rLI7S 'f0 J161~2~2644~ F,r
~a~a.~~~j~~a
17 .~
for ejecting the staple x,04, which is guided with its
lateral arms 104' in the grooves 136. Furthermore, the
ram 80 has a groove-shaped cutout 3.64 open towards the
supporting part 118, in which a aompxessxoz~ spring 166
is arrmnged. The Compression spring 166 as supported
at its upper end on the ram 8d and at its lower end on
a bolt 3.68, which is fastened to the supporting part
318 arid reaches into the groove-shaped cutout 164
(Figure 9). The Compression spring 166 holds the ram
80 in the rest position indicated in Figure 7 with
unbroken liIles and in Figure 9 with dots and dashes.
At the lower end with respect to the stamp
130 located in the staple placing positron 130', the
lateral sides 116 have projecting holding noses 170,
xhe projecting holding noses 170 are separated from one
another by an essentially V-shaped Cutout 17p'. When
the stapling head 28 z$ lowered, it Comes to bear with
the holding noses 1'~0 against the support :14 or against
the printed sheets 20 deposited thereupon.
~'he supporting part 118 is slidably mounted,
likewise in the direction of the arrow F, in a bearing
arrangement 172 fastened to the suppoxt section 62 (cf.
also Figure 6). At the lateral ends, the supporting
part 118 likewise has g7roove-shaped cutout s 174
(Figures 7 and ~~), into which a bore 1.76 with a thread
1~6' opens from below in each case. E'urthex bolts 7.78,
which engage in the groove-shaped cutouts 174 and on
which one further Compression spring ?80 each is sup-
ported at the upper end, are arranged on the bearing
arrangement 172. At its lower end, th~.s compression
spring 180 presses against a screw 7.82 inserted into
the thread 176'. Conseduently, in relation to the
bearing arrangement 172, tlae COmpxession spring 180
holds the supporting part 2~8 in the ~.owez~ rest posi-
tion shown in ~'iguxe 7, on which the supportzz~g part
_ 17 -
~5% ~4~19'J~:J 1 G_1: d.a FRfJhI kl I LL I Flhl. BR I h4KS ~ OLDS TO
5161.:ic3284~10 P . ~iF_,
~ fin -a ~~ ;~f ~
l~ 'wig .~. r~ '-.~: ~ vb
- 18 -
118 is supported on the bolt 178. When the support
section 1~,2 as lowered (cf. Eigure ~) by the action of
the pair of lowering slotted links 76 upon the follower
rollers 7.~, the supporting part 118 comes to bear with
the holding noses 170 against the support 14 or against
the printed sheets 20 deposited thereupon. The differ-
ing position of the lowered stapling head 28, which is
occasioned in relation to the support 14 by printed
sheets 20 of varying thicknesses, is now accommodated
by filiding the supporting part 118 in relation to the
support section 62 (and bearing arranr~ement 172}, which
section is always lowered to the same et~tent.
A drive arrangement 184 for swiveling the
shaft 120 is fastened to one lateral side 116 of the
supporting part 118, which side as represented below in
Figure 8. The shaft 220 has a guide element 185, on
which the actuating shaft 100 is slidably mounted,
likewise in the direction of the arrow F. Integrally
formed at the lower end region on the 2tctuating shaft
100 is a toothed rack 186. The toothed rank meshes
with a pinion 190, which is seated rotationally firmly
on the shaft 120. A further compression spring 194, is
arranged in a bore 192, which as open downwards in the
actuating shaft 100. The compression spring 194 a,s
supported at its upper end on the actuating shaft 100
and at its rower end on a pin 196 fastened to the guide
element 185. The pin 7.96 penetrates an elongated
passage 198 in the actuating shaft 100. The upper end
region of the actuating shaft IOOy s covered by a cap-
shaped sliding shoe 200, wk~ich is slidabls in the
longitudinal direction in relation to 'the a~c'tua~ting
shaft 100 and is held by means of a further pin 198'.
The further pin 196' is attached to the actuating shaft
100 azxd penetrates the slidaxxr<c~ shoe 2007 in a passage
198' that is likewise elongated. .~ further compression
_ lg
n5~~4~1 ~!G~7 1 ~7: a4 FRGhI In I LL I f~I~I ~ B~ I IJI<S ~ OLDS TC1 91E1
~i23284~1 J P, ~7
~ 1 ~? !~ -~
_ 1~
spring 194", which is supported on the sliding shoe 200
and on the actuating shaft 200, is inserted into a bore
192', open upwards, in the actuating shaft 200. It the
actuating shaft 100 is located in its lowex end posi-
~Cion shown in Figure 9, and the swa.vel slotted ~.~.nk 3.02
approaches the supporting part 13~ even moxe closely,
the compression spxi.ng 194' accomanodates this approach.
The clamp lever 94, which is penetrated by
the actuating shaft 100, is swivelably mounted on the
guide element 185. The corresponding hole an the clamp
lever 94 has a diameter that is only slightly larger
than the thickness of the actuating shaft 100, xhe
clamp lever 94 is held pretenszoned Gountexclockwise by
means of a compression spring 204. In the positi.an of
the clamp lever 94 showxz in Figure 7, the lever 94
holds the actuating shaft 100 in place by tilting. Hy
applying a force in the direction of the arrow G by
means of the releasing slotted link 96 {cf. Figv,axe 6)
this fiilting is undone by swiveling the clamp 7.evex 94
clockwise, and the actuating shaft 100 is released, the
latter being slid upwards by tk~e Gompresszon spring
194.
The mode of operation of the stapling head 2~
will now be described xn conjunction with Figuxes lO to
15. .These figures show part of the stapling head 28
during various phases of an operational cycle. The
correspozzding parts of the staplizag head 28 are num-
bered in these figures in the same way as in figures 7
and 9, and will therefore not be ~xplaiz~ed an more
detail. xhe bend-over ram 3.14 is guided to slide up
and down in th.r~ support ~.4 (Figures 12 to 15) i.n the
direction of the arrow E. Supported on it are two
benders 206 that are swivelably mouzxted on the support
14 (cf. also figure 6 in this connection).
~, g
O5,'~~; laa~ 1L~:4s FROP1 I.JILLIRNrE~INI<S~OLDS TO J1E~1~232c~~140 F',GE
- 20 -
In Figure 10, the stamp 1.30 is located iz~ its
rest positzox~, also shown in Figures 7 and 8. The ram
80 with its ram head 158 is likewise located in the
rest position. The stapling head 28 moves past the
conveyor wheel 42 of the wixe sectfan dispenser 30 (e~,
Fig, 1), and in so doing accepts a wire section 38 from
the holding element 44 of the conveyor wheel 42 drive
by means of the drive noses 138. The wire section 38
~.s held on the stamp arms 128 by means of the permanent
magnets 140 Snot shown in this k'igure). ThE web con-
necting the two stamp arms 128 to one alnother is
illustrated by 132.
xn Figure 12, the stapling head 28 is located
in the region of the matrix 98 (see Fig. 5), the stamp
130 still being located in its rest position. ~s the
stapling head 28 slides along the matrix 98, the wire
section 38 is bent in the shape of a U to form a staple
104, the lateral arms 104' sliding into the grooves 136
of the stamp arms 128. due to the effect of the swivel
slotted link 102 on the sliding shoe 200, the actuating
shaft 200 is brought into its lower end positfon shawz~
in Figure 9, with the result that thp stamp 130 is
swiveled into -the staple placing pasitimn 130' shown in
Figures 9 and 12. In the course of this swi.veliz~.g
movement, the stamp arms 1.28 engage in the region of
their swellfng 134 in thp grooves 148 of the staple
holding element 146, so that the lateral arms 104' are
held in the grooves 136. The pivoted lever, designated
by 144, is fastened to the staple guide element 146.
In tlZe staple placing position 130' o~ the stamp 130
the ram head 158 0~ the ram 80 is likewise located
between the two stamp arms 128, but fn the region
between the shaft 120 and the swellings' 134. When the
ram slatted link 78 acts upon the ram 80, the latter is
pushed i:n the direction o~ the arrow F against the
~0 _
n5: c4~199~7 l~:a~, FROI~1 IJILLIAhI~BRIf~II:S~r_~LUS TO 9161~2S2S44~ F.cS
~zW~~~~.j
.~ ~.
_ 21 -
support 14, as is Showri iri Figure 13. rn this process,
the guide wedges 160, which are integrally foamed
latexally on the ram 158, slide into the grooves 136 of
the stamp arms 128 located in the staple placing
position a30'. The staple 104 is ejected ~rom the
stamp 130 bx the ram groove 162, the lateral arms 104'
simultaneously being pushed through the printed sheets
20 which are deposited on the Support 14. As tk~e ram
80 is lowered, it slides on the wedge face 1S4' of the
staple guide nose 7.54, so that the staple holding
element 146 which is fastened to the piwated levers 144
is swiveled clockwise (cf. Figure 9). In this pxocess,
the staple guide nose 7.54 holds the lateral arms 104'
of the staple 104 in the grooves 13C~ until, the staple
104 is inserted into the printed sheets 120 and the
staple guide nose 154 is swiveled out of the region of
the gxaaves 136. The subsequent xaising of the bend-
over ram 114 in the direction of the arrow F swivels
the benders 206 in the upwards direction. As a coz~se-
quence, the sectipns of the lateral arms 104' that
project in the region of the benders 206 are bent over
with respect to one another (Fig. 14). xn this
process, the ram 80 is still held in the lower end
position by~ the ram slotted link 78. After the ram 80
has retuxned Exam the ram slotted link 78, it once
again moves back under 'the force o~ the compression
spring 166 into the upper rest position, as is shown in
Figure 15. The lowering of the bend-over ram 114 in
the direction of the arrpw ~ also swivels the benders
206 back into their oxxginal position. As the stapling
head 28 runs past the releasing slatted link 96, the
actuating shaft 100 ~.s released from the clamp lever
94, and this causes the stamp 130 to swivel back into
the rest position.
- 21 -
. n5~~4~1aG~ 1~~:46 FRUhI IJILLIf-11~I~BRI~II:S~fjL~S TO G151'~32r44a F'.1~
~,~,~ r n
~.~ s.
..
The wire section dispensers 30, which are
indicated in Figure 5 by the arrow 30 and assigned to
the two tapering head arrangements 2~k, are shown
ez~Iaxged in Figures 15 and 17. Each of these wire
section dispensers 30 is Constructed in the same way as
the wire section dispenser 30 shown in Figure 1. The
cutting device 32 as driven via a rotating toothed belt
208.. A pair of conveyor rollers 220 conveys the wire
36, which is clamped therebetween, ~.n steps in the
direction of the arrow ~. A cutting blade 212, can be
moved up and down in the direction of the arrow I. 1'he
cutting blade 212 severs a ware section 3s3 from the
wire 36 by being lowered after each conveying movement
of the wire 36, A magazine 40 is arranged below the
cutting device 32, downstream o~ the cutting b7Lade 212.
The magazine 40 has an essentia~.Zy sla.t~-shaped stacking
shaft 214 extending approximately in the vertical
direction. The wire sections 3$ fall in the stacking
shelf 214 so that they extend longitudinally in an
essentially horizontal direction.and are stacked above
one another.
Provided ar the upper end o~ the stacking
shaft 214 is a pxes-tacking device 21~. 'fhe prestacking
device incJ.udes a tongue 218 which can lee moved into
the region o~ the stacking shaft 2a4 and once again
withdrawn therefrom. When the tongue 21$ is moved into
the region o~ the stacking shaft 214, a number of wire
sections 38 severed from the wire 36 by means of the
cutting device 32 are stacked. A brief withdrawal o~
the tongue 218 causes these stacked wire sections 38 to
then fall together into the stacking shaft.214. This
prevents exaction end tilting of the wire secta.ons 38
during free fall, and guarantees neat stack~.ng of the
wire sections 38 in the stacking shaft 2~.4.
_ 22 ..
O5~'~~:'lqq~7 1«:4'7 FFU7h-1 WILL1~~I~HRI~II;S~CiLDS TO 916:LJ~'~J~~4~IO P,11
~.'~
~~ ~'~ ?~
_ ,~ 3 _
The two conveyor wheels 42 arranged below the
magazine 4Q are firmly seated rotationally on a common
bearing shaft 22~k, which is pivotally mounted on a pair
of support levers 222. The two conveyor wheels 42 axe
driven to rotate in the direction of the arrow 'V by a
drive deva.ce 228 acting upon the bEaring shaft 224 via
a drive belt 226.
;;ach conveyor wheel 43 has two mutually
spaced parallel disks 230, between which the holding
elements 44 are arranged at specific spacings along the
circumference. The holding elements are preferably
constructed in the form of a U, and have at their ~ree
ends, which are directed outward ~.x~ the rad~.a~. direc-
tion, carrier sides 232 projecting sl~.ghtly above the
periphery of the disks 230, zn a manner similar to
that described above in connection with the stapling
head 28, a permanent magnet arrangement xs provided on
the holding elements 44, in order to hold in place the
wire sections 38 which are released from ~Che stacking
shaft 214 by means of the carrier sides 232 while
running past the magazine 40.
The stapling heads 28 are more widely mutu-
ally spaced than the holding elements 44. Canse-
quentty, the c~.rcumferant~a~. speeu ~r ~zm 4v~~A~dy~~
wheels 42 is lower than the rotational. speed of the
staplxx~g heads 28, such that 9.x~ each case the next
stapling head 28 coincides with the next hol~,ang
element 44. xhus, the stapling head 28 rung past the
holding element ~~, and draws the re3.evaa~t wi~:~r~ secta~n
38 from ~Gha holding element 44 with the drive noses 138
arranged on the stamp arms 138, and kaolds the wire
section xz~ place by means of the permanent magnets 140
pn the stamp 130. The holding elemewts 9~4 are arranged
slidably and resiliently an the radial direction in a
generally known fashian, ~.n order to be able to accom~
_ 23 _
~J5%~C~t~:l9'lt_I lCt:dr~~ FF;GI'I LJILLIFII~Irla'RII~II!SrGLDS TO
9161JG,J~G~14~J F.12
~i~i'l~~~IJL~
J,.
2 4 ~-
modate tolerances, and to guarantee a reliable accept-
ance of the ware sections 38 from the stacl~xng shaft
21~ and transfer to the stapling heads 28.
The mode of operation of the stapling
stations 22 represented fn Figures S azad 6 will now be
explained with the aid of Figures lg to 24,
The initial region of the carrier slotted
lank 9z is represented in the.direction of rotation tJ
in Figure 18. As the follower rollexs 86 of tha
carriers 8,2 rotate in the direction of the arrow U,
they xun up onto tho caxxxer slotted link 9c, As a
consequence, the carrisrs 82, which are slidably guided
in the radial direction on the holding pant 68, are
lowered onto the relevant supports ~.~ of the calleator
drum 10, Zn this process, the V-shaped carrier sec-
tions 84 embrace the supports 24. Conseciuently, the
stapling heads 28 (not shown in Figure 18) which are ,
arxanged on the support section 62 are accurately
aligned relative to the assigned support 19. or to the
printed sheets 20 deposited thereupon. Furthermore,
the holdi>lag arrangement 52 is driven exc~.usively by
driving effected by the carriers $2 engaged with the
supports 14. The carriers 82 axe lowered only in the
upper region of the rotation track o,~ the collector
drum IO onto the supports 14. Zn this mannex, in the
lower region of the rotation track, the printed sheets
20 which have been stapled by means of the stapling
station 22 can be conveyed away in the direction of the
axis of rotation 12 through 'the now mutually spaeed
supports 1~ and carriex sections $~, or the printed
sheets 20 which are to be stapled can ~e brought into
the region of the stapling station 22.
A stapling head 28 will now be followed ~.n
the course of a rotation of the holding arrangement 52,
starting at the wire section dispenser 20, .~s the
,24 _
n~:'~4; 1y9~~ i~t~49 FRUf>1 I,.11LLIEd~I~BFrItll-:.'~,OLD~~ T~ J1613232~~1nGJ
P.1~ ~- ~~
6 Pe .' ry ~ ~~
~~.,1
.D
- 2S -
stapling heads 28 run past the ware sectioza dispenser,
the heads 28 are located, seen in the radial direction,
in their outer rest position, in which they are spaced
tram the supports ~,~. Moreover, the staples x.30 ax-e
swiveled back into the rest position, so that the free
ends of the stamp arms 128 are directed outward, seen
in the radial direction. As the stapling head 28 runs
past the xe3.evant x~o~,dang element ~~ of the conveyor
wheel 42, the wire section 38 which as fed from the'
holding element 44 is detached by the drive noses 138
from the holding said element 44, and Carried along
(Fig. 19).
In the Bourse of the further rotation in the
direction of the arrow U, the stapling heads 28 pass
into 'the region of the matrix 98, as is shown in Figure
20. The matrix 88 zs formed in the shape of a slotted
link. Seen in the direction of the arrow U, the
spacing between the matrix 98 and the shaft 1~0
dOCreaS~S, 84 that W~~x'7. t~G Stamp 130 iS laCat~2d In the
X'2st poSitIOn the relevant Wire section 38 d~ '~~~l~t t0
form a staple lOg, and p~ashPd into the grooves 136 of
the stamp arms 128 (Fig. 20). Upon reaching the swivel
slotted lirxk 1a2, t~xe sliding shoo 204 runs up onto the
latter, and as a result the actuating ~ahaft 1.00 is
forced inward in tae radial direction: in the da.recta~az~
of the arrow F. This translational movement of the
actuating shaft 340 is converted wia the pia~ion 19~
into a swi~relinc~ movement o~ tl~e shaft 120. As a
result, the stamp 130 is swiveled cou~atexcloGkwise 180°
from its rest position into the staple placing position
130', whereugon the free ends of the stamp arms 138 now
faae 'Ck~e supports 14 inward in the radial raa.xwctxolo.~
The Clamp lever 2D2 holds the aa'tuatanc~ shaft lOi? xxx
its lower end position against the force of the
compression spring 394 (cf. figure 7) (Fig. 21).
- 25
175i~~1:'1~'-~~t lvJ:49 ~ROh1 LJILL1AIJ~ERINK~~,nLDS TO D161J~J~~~~I~ F.14
f ,a' ., .
4xJ ~~ ~, YJ ~~ ~~t ?~
26 -
In the caurse of the further rotation in the
direction of the arrow tl, upon reaching the carrier
slotted link 92 the carriers $2 are lowered onto the
supports 14, as is described above,. 'xhe follower
rollers 74 subseeluently pass into the region c~~ the
pair of lowering s2otted links 75 (see Figures 5 and
, so tha'!; the support section 6~ witk~ the stapling
heads 28 which is arxanged thereupon is lowered to a
specific extent in the direction against the suppowts
14. Iz~ this process, the supporting part 118 with its
holding noses 170 comes to bear against the painted
sheets 20, which rest astride the supports 14.
It should be noted that the holding noses 170
hold the printed sheets 2.0, seen in th~ direct:~on o~
the support 14, in place in front of and behind the
staple 104, and on both sides of the latter. This
arrangement leads tv especzally neat stapling. It
should also be noted that the sugportinc~ part 21~ is
dzsplaeed in relation to the bearing arrangement 1?2,
which is fixed on the support section 62, as a function
of the thickness of the printed sheets 20.
Consequently, neat stapling of printed sheets za of
different thicknessas is guaranteed without it bexnc~
necessary to reset the apparatus (cf. Figuxe,22).
When the stapling heads 28 bear against the
printed sheets 20, the heads 28 are conveyed against
the ram slotted lank 7$. In a first section 78° seen
in the direction o~ the arrow tJ, the ram slotted Link
78 e~rtends at a spacing that decreases towards the
rotation track of the supports 14 '(Fig, 23). In this
region, the ram 80 is lowered in the direction against
the printed sheets 20, so that the staple 104 is
ejected from the stamp 7.30, and placed into the printed
sheets 20. In a section 7$" which adjoins the section
7$', the ram slotted link 78 extends at a constant
05 ~'~'4 i 19961 1 O: ~Et FROM h11 LL I Fi!~I ~ ER 1 P IKS ~ OLDS TO 51F
132328~I~i ~ F, 1
. G:a ~
- 27 -
spacing in relation to the supports 14. I~, this
section, the ram head 158 forces the staple 104 t~.ghtly
against the printed sheets 20. This prevents the
staple 104 from .falling back when the lateral arms 104'
are being bent over as a coxxseguence of raising of the
bend~over ram 114 in the direction o~ the arrow E, and
of the swiveling of the benders 205 connected thereto
(c~. also Figures 22 to 15).
Aftex the staple 7.04 is placed axxd the
lateral arms 104' are bent over, the ram $0 slides back
into its outer rest position, seen in the radial
direction, under the action of the compression spring
166 and of the spacing from the supporting part 118,
which increases in the end region of the ram slotted
link 78.
Following the ram slotted link 78, the
spacing of the pair of lowering slotted links 76
increases in relation to the holding arrangement 52.
As a result the stapling heads 28 are raised from the
supports l4 or from the stapled pri.x~ted sheets 20
deposited thereupon. This is illustrated in figure 24.
In the course of the furthex rotation, the
stapling heads come into the regxox~ of the releasing
slotted link 96, which swivels the clamp lever g4
clockwise. Gonsec~uently, the actuating shaft 100 is
released, so that said shaft is pushed outward under
the force of the compression spring 194 (cf. Figure 7)
ire the radial direction in the direction o~ the
arrow F. This leads, ixx turxx, to the stamp 130 swivel-
ing back clockwise from its staple placixag position
130' into the rest position. 'the stapling heads 28 are
now ready once again to accept a new wire from the wire
section dispenser 30.
Upon further rotation o~ the call@ctor
drum 10, the stapled pxi.nted sheet: 20 are now coxxveyed
- 27 -
n5% =~~Si1990 16: 51 FR01°1 I.J I LL I FiI~I ~ ~R I hJhS ~ r_~LDS TG
5161 ~2~5 S44G P.16
t
v% ~~ tf
G,a E.v ..~. d ~. ~.~,; r.~
- 26 -
in the direction of the axa.s o~ rotation 12 away from
the regxor~ of the stapling station 22 to a lead-away
station (not shown).
The stapling heads 28 caz~ be constructed vexy
simply due to the separation p~ the wire section
preparation and the wire stapling heads 28. Moreover,
only a single wire section dispenser 30 is required per
stapling bead arrangement 24 thus xeduCing the
expenditure to a minimum. Moreover, the wire section
dispenser 30 can be removed from the region in which
the staples 104 are planed iR~to the pranted s~~eets 20.
As a result, enough time is available for prepaxa,zxg the
staples 104 in the region between the wire section dis-
penser 30 and the staple placing region. In the case
o~ stapling heads with swivable stamps x.30, the prepa-
ration o~ the staples 104 can be performed in a posi~-
tion different from the staple placing position 1?10'.
This means that the different functions of tkze stapling
heads 18 are spatiallX separated from one another; the
result o~ this zs, in turn, that the stapl~.ng heads 28
are constructed simply a,s well as with small
dimensions.
Of course, the matrix for bending the wire
section 38 to foam a staple Z04 aan be pxova.ded on each
stapling head 28 itself. This matrix has a profile
that is eccentric with. respect to the shaft,, so that
the staple 104 is formed during the course o~ 'the
swiveling movement of the stamp 130 from its rest
position~into the staple plaafng~~osxtion 130'. Such a
matrix could especiallx be integrally formed cloclswise
on the staple holdiaag element 146 as an ~e~ttensac~n
thereaf .
It is, of course, also possible for the
carriers to be arranged on the stapling heads.
Therefore, it is entirely conceivable that the holding
- 2g -
CA 02017443 1999-12-10
25561-65
- 29 -
noses 170 could serve as carriers. In this arrangement, a
separate drive for the stapling station 22 is no longer
necessary, and synchronization problems between the rotation
of the collector drum 10 and the stapling head arrangements
24 are eliminated.
Of course, the tension member or the holding
arrangement 52 can be driven to rotate by means of its own
drive motor. Furthermore, it is conceivable that the wire
section dispenser could have a replaceable magazine, or that
the wire sections could be fed directly to the stapling
heads from the cutting device.
It remains to be mentioned in conclusion that, for
the purpose of accepting the wire, the stamps 130 can be
located in a wire acceptance position different from the rest
position. However, the wire acceptance position does not
correspond to the staple placing position 130'. The wire
sections 38 extend essentially parallel to the swivel axis
122.
Stapling heads that are especially suitable for
apparatuses according to the invention for collecting printed
sheets are described in the contemporaneous CA Patent Appli-
cation No. 2,017,441-2 and EP-A-0 399 322.
An apparatus according to the invention with which
a stapling head is permanently assigned to each support also
allows the stapling heads of a stapling head arrangement to
be mutually offset in the longitudinal direction of the
supports. It is thus possible, for example, for each second
stapling head to be slightly offset in relation to the other
stapling heads arranged in a plane; the two groups of stapling
heads then advantageously run past their own wire section
dispenser in each case. All The staples do not
- 29 -
~~:-~4;~l~9rn in:~~_ FR01~1 4J1LLIRf~I~Ef;lt'II:S~nLDS TO 51F1'2328~14~J f-
',1~
- 30 -
then come to be located above one another during stack-
ing o.~ th~ stapled sheets.
.. gp _
